Cap for a bottle



FIG. 1 is a perspective view of a cap for a bottle showing my new design;

FIG. 2 is a top plan view;

FIG. 3 is a side elevational view;

FIG. 4 is a bottom plan view; and

FIG. 5 is a sectional view taken on the line 5--5 of FIG. 2. 

The ornamental design for a cap for a bottle, substantially as shown and described. 